DEBUG: map-center crosshair

public/assets/css/style.css

@@ -1,3 +1,12 @@
+.horz, .vert {
+  border: 1px solid black;
+  position: absolute;
+  padding: 0;
+  margin: 0;
+  box-sizing: border-box;
+  pointer-events: none;
+}
+
 body {
   margin: 0;
   display: flex;

public/index.html

@@ -344,6 +344,11 @@
 
   <input type="file" accept="image/svg+xml" />
 
+  <div class="horz"></div>
+  <div class="horz"></div>
+  <div class="vert"></div>
+  <div class="vert"></div>
+
   <script src="index.js"></script>
   <script src="soldier_record_block.js"></script>
 </body>